Seamless Pipe is formed by forcing molten metal through a round die with a plug in the center to form a long tube of continuous metal which is then cut into appropriate lengths; usually either 21 ft or 40 ft. although other lengths are available. Seamless Pipe is more uniform in consistency unlike Rolled and Welded Pipe that has been seam welded. Seamless Pipe can also, usually, withstand higher operating pressures and temperatures than Weld Pipe so it is commonly preferred for use in high pressure systems. Fluid flow through Seamless pipe is generally less turbulent than Welded pipe also.